Chlorine (Cl)

POSITION IN PREODIC TABLE

Ores of Chlorine

Chorine is not found in a free state in nature. It mainly occurs in the combined From as Salt NaCl (Sea Water), KCl Sylvite and Carnallite (KCl.MgCl₂.6H₂O). Sea water contains a Large amount of Chlorine in the form of Chlorides.

Why Chlorine is Found as Compound

Chlorine is very reactive, so it easily combines with metals and non-metals. That is why it is never found in pure from in nature.

Methods of Preparation Of Chlorine

(1) Chlorine gas is preared in the laboratory by the oxidation of Hydrochloric Acid (HCl) using Manganese dioxide (MnO₂ )

MnO₂​ + 4HCl → MnCl₂​ + 2H₂​O + Cl₂​^↑

in this reaction, manganese dioxide acts as an oxidizing agent and converts hydrochloric acid in to chlorine gas.

(2) Oxidation of Hydrochloric Acid By Potassium Dichromate

Chlorine gas can also be prepared in the laboratory by oxidizing Conc. hydrochloric(HCl) acid with potassium dichromate(K₂​Cr₂​O₇​)

K₂​Cr₂​O₇ ​+ 14HCl → 2KCl + 2CrCl₃​ + 7H₂​O + 3Cl₂​^↑

(3) Action of Dilute Acid on Bleaching Powder

When dilute Sulphuric acid reacts with Bleaching Powder to form Chlorine gas is released.

Ca(OCl)Cl + H2SO4 →CaSO₄ + H₂​O + Cl₂​^↑

When dilute Hydrochloric Acid (HCl) reacts with Bleaching Powder to form Chlorine gas is released.

Ca(OCl)Cl + 2HCl → CaCl2 + H₂​O + Cl₂​^↑

(4) Oxidation Of Hydrochloric Acid (HCl) by Red Lead (Pb₃O₄)

Red Lead Oxidised Hydrochloric Acid (HCl) to produce Chlorine gas.

Pb₃O₄ + 8HCl 3PbCl₂ + 4H₂O + Cl₂​^↑

Chemical Reaction Of Chlorine

Uses OF Chlorine

Production of Hydrochloric Acid (HCl)

for Bleaching Clothes and paper.

For Purification and Drinking water because it acts as a disinfectant

For Extraction of Gold

For the Production Of chloroform